[natterjack]

I'd say that it looks like they are blocking it, but for the life of me, I can't imagine why.

A slow and horrible work-around would be to hover over the link you want, make a note of the key words that form the address of that link, and google for them (so eg "garmin outdoor").

You should then be able to get to the google cache for each page when it comes up in the search results. Far from ideal though.

It might be worth getting in touch with your ISP's customer service people - but I wouldn't hold out too much hope.

Alternatively find someone with the same ISP and get them to see if they can see the pages - that would tell you if it is Orange or not.